154381 has 4 divisors (see below), whose sum is σ = 155232. Its totient is φ = 153532.

The previous prime is 154373. The next prime is 154387. The reversal of 154381 is 183451.

154381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 154381 - 2³ = 154373 is a prime.

It is a super-2 number, since 2×154381² = 47666986322, which contains 22 as substring.

It is a Duffinian number.

154381 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31 + ... + 556.

It is an arithmetic number, because the mean of its divisors is an integer number (38808).

2¹⁵⁴³⁸¹ is an apocalyptic number.

154381 is the 249-th centered pentagonal number.

It is an amenable number.

154381 is a deficient number, since it is larger than the sum of its proper divisors (851).

154381 is an equidigital number, since it uses as much as digits as its factorization.

154381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850.

The product of its digits is 480, while the sum is 22.

The square root of 154381 is about 392.9134764805. The cubic root of 154381 is about 53.6452511976.

It can be divided in two parts, 154 and 381, that added together give a palindrome (535).

The spelling of 154381 in words is "one hundred fifty-four thousand, three hundred eighty-one".